Arrange-8-coins-in-one-line-on-a-table-such-that-the-head-or-tail-will-be-facing-upward-Try-to-flip-two-neighboring-coins-that-are-not-with-identical-face-upside-down-After-several-operations-how-

Question Number 1397 by 314159 last updated on 28/Jul/15

A r r a n g e 8 c o i n s i n o n e l i n e o n a t a b l e

s u c h t h a t t h e h e a d o r t a i l w i l l b e f a c i n g

u p w a r d . T r y t o f l i p t w o n e i g h b o r i n g c o i n s

t h a t a r e n o t w i t h i d e n t i c a l f a c e u p s i d e d o w n . A f t e r

s e v e r a l o p e r a t i o n s, h o w m a n y d i f f e r e n t

w a y s c a n t h e h e a d s a n d t a i l s b e a r r a n g e d

i n o n e l i n e o n t h e t a b l e .

Commented by prakash jain last updated on 28/Jul/15

Initial arragment :

HHHHHHHH

or

HTHTHTHT

Commented by 314159 last updated on 30/Jul/15

p l s . . c o n s i d e r a s u t h i n k \dots

I a l s o {d o n}^{'} t k n o w t h e s o l u t i o n o f t h a t p r o b l e m .

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